介绍了一种新型气膜密封结构、性能特点及其应用。
The structure, performance and features of a newly developed non-contacting gas film seal were introduced.
应用微扰方法和有限元法，对端面气膜密封三自由度微扰下，密封气膜的刚度和阻尼系数进行了数值求解。
The small perturbation method and the finite element method were used to calculate the stiffness and damping coefficients of a gas film with three degrees of freedom for a gas film face seal.
本文介绍航空燃气轮机转子叶尖“紧间隙”密封的典型结构型式现状，转子内流系统应用气膜密封的有关研究进展。
The paper introduced typical structure of the close clearance seals for blade tip seals in modern aero-turbine and the research progress of gas film seal for gas turbine.
研究表明，启动过程中，密封的特性参数在开启临界气膜厚度附近快速变化；
The results indicated that the sealing parameters changed remarkably near the opening critical film thickness in the start up process.
密封端面正锥度的增加能使密封气膜刚度显著提高，但同时也使密封的泄漏量有所增加。
With the increasing of seal face's positive taper, the stiffness of gas film would obviously increase, but the leakage of seal would also increase.
根据开启临界气膜厚度的假设，提出了用于分析干式气体密封开启性能的判据——开启临界转速。
With the hypothesis of critical gas film thickness, a criterion for expressing the opening behavior of DGS, namely the critical opening rotational speed (CORS), was proposed.
密封端面正锥度的增加能使密封气膜刚度显著提高，但同时也使密封的泄漏量有所增加。
With the increasing of seal face's positive taper, the stiffness of gas film is obviously increased, but the leakage of seal is also increased.
在有关端面密封气膜压力分布的计算中，采用了对几何结构适应性强的有限元素法。
The adaptable finite element method is used for calculating the pressure distribution of gas film for face seal.
富氧化膜装置除其上面和底部与进气软管连接处外，其余各面均密封。
The sides of the oxygen enriched membrane device are all sealed except top, the bottom and the joint of the air inlet tube.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
利用有限元法求解密封端面间气膜控制方程——雷诺方程，得到了端面膜压分布。
The equation governing the gas film between the seal faces-Reynolds equation was solved by means of the finite element method, and the film pressure distribution between the seal faces was gained.
利用有限元法求解密封端面间气膜控制方程——雷诺方程，得到了端面膜压分布。
The equation governing the gas film between the seal faces-Reynolds equation was solved by means of the finite element method, and the film pressure distribution between the seal faces was gained.
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